seniorApache Spark
Cost of Checkpointing vs Persistence.
Updated May 5, 2026
Short answer
Persistence is faster but fragile; Checkpointing is slower but reliable.
Deep explanation
Persistence (cache()) keeps the RDD lineage and is managed by the Spark BlockManager. Checkpointing destroys the lineage and requires writing to HDFS/S3, which involves a new Spark job.
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